[Asterisk-Users] Line Noise UPDATE - If you've got line noise,
read this
Paul
junk at irqx.com
Thu Apr 21 12:23:23 MST 2005
Hmmmmm...well, here's something interesting. On my previous box, neither of
the cards were sharing IRQs with anything.....now, both cards are on 11,
along with many other things. This could very well be a problem. As far as
the network goes, there is very little traffic and the switch is full duplex
100 megabit. Bandwidth is only a factor on he local lan, since asterisk
dials out through a FXO card(X100P) then it doesn't go across my broadband
connection. Let me know your thoughts.....sorry for the verbose output.
Paul
[root at router /sbin]$ ./lspci -v
00:00.0 Host bridge: VIA Technologies, Inc. VT8377 [KT400 AGP] Host Bridge
(rev 80)
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, 66Mhz, medium devsel, latency 8
Memory at d0000000 (32-bit, prefetchable) [size=128M]
Capabilities: <available only to root>
00:01.0 PCI bridge: VIA Technologies, Inc.: Unknown device b198 (prog-if 00
[Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00009000-00009fff
Memory behind bridge: e8000000-e9ffffff
Prefetchable memory behind bridge: d8000000-e7ffffff
Capabilities: <available only to root>
00:09.0 Communication controller: Tiger Jet Network Inc. Intel 537
Subsystem: Intel Corp.: Unknown device 0003
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at a000 [size=256]
Memory at eb002000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <available only to root>
00:0a.0 Communication controller: Tiger Jet Network Inc. Intel 537
Subsystem: Intel Corp.: Unknown device 0003
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at a400 [size=256]
Memory at eb000000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <available only to root>
00:0b.0 Ethernet controller: Linksys Network Everywhere Fast Ethernet 10/100
model NC100 (rev 11)
Subsystem: Linksys: Unknown device 0570
Flags: bus master, medium devsel, latency 32, IRQ 5
I/O ports at a800 [size=256]
Memory at eb001000 (32-bit, non-prefetchable) [size=1K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: <available only to root>
00:0f.0 RAID bus controller: VIA Technologies, Inc.: Unknown device 3149
(rev 80)
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at ac00 [size=8]
I/O ports at b000 [size=4]
I/O ports at b400 [size=8]
I/O ports at b800 [size=4]
I/O ports at bc00 [size=16]
I/O ports at c000 [size=256]
Capabilities: <available only to root>
00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus
Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
Subsystem: VIA Technologies, Inc. VT8235 Bus Master ATA133/100/66/33
IDE
Flags: bus master, medium devsel, latency 32
I/O ports at c400 [size=16]
Capabilities: <available only to root>
00:10.0 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00
[UHCI])
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at c800 [size=32]
Capabilities: <available only to root>
00:10.1 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00
[UHCI])
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at cc00 [size=32]
Capabilities: <available only to root>
00:10.2 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00
[UHCI])
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at d000 [size=32]
Capabilities: <available only to root>
00:10.3 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00
[UHCI])
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at d400 [size=32]
Capabilities: <available only to root>
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86) (prog-if 20
[EHCI])
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at eb003000 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>
00:11.0 ISA bridge: VIA Technologies, Inc.: Unknown device 3227
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: bus master, stepping, medium devsel, latency 0
Capabilities: <available only to root>
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233 AC97
Audio Controller (rev 60)
Subsystem: Elitegroup Computer Systems: Unknown device 1884
Flags: medium devsel, IRQ 11
I/O ports at d800 [size=256]
Capabilities: <available only to root>
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev
78)
Subsystem: VIA Technologies, Inc. VT6102 [Rhine II] Embeded Ethernet
Controller on VT8235
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at e000 [size=256]
Memory at eb004000 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R300 NE
[Radeon 9700] (prog-if 00 [VGA])
Subsystem: ATI Technologies Inc: Unknown device 0002
Flags: bus master, stepping, 66Mhz, medium devsel, latency 32, IRQ
10
Memory at d8000000 (32-bit, prefetchable) [size=128M]
I/O ports at 9000 [size=256]
Memory at e9000000 (32-bit, non-prefetchable) [size=64K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: <available only to root>
01:00.1 Display controller: ATI Technologies Inc: Unknown device 4e65
Subsystem: ATI Technologies Inc: Unknown device 0003
Flags: stepping, 66Mhz, medium devsel
Memory at e0000000 (32-bit, prefetchable) [disabled] [size=128M]
Memory at e9010000 (32-bit, non-prefetchable) [disabled] [size=64K]
Capabilities: <available only to root>
-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Andrew
Kohlsmith
Sent: Thursday, April 21, 2005 07:05
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] Line Noise UPDATE - If you've got line
noise,read this
On April 21, 2005 02:28 am, Andre Normandin wrote:
> I've experiened the noisy line from both my POTS lines (Digit Networks
> X101P cards -- 3 of them to be exact) as well as my VOIP provider
> (Broadvoice)...
>
> The problem has also occured in both directions (I.E I originate the call,
> or someone has called me, again on 2 POTs lines (3rd is fax), as well as
on
> my voip line)..
I would *certainly* look at your network or your internet upstream then.
You
may also want to try Dial(IAX2/echo at switch-1.nufone.net) -- it's a free
call;
it is Nufone's echo() application on their main termination switch. Call it
from your SIP phone and talk away (I find doing Darth Vader-style breathing
is both quiet and gives very good feedback)... See if you hear sputtering
or
chopping then it very likely has nothing to do with your X101Ps... You
might
want to remove one to see if that helps as well (i.e. have only one Zap card
in your system).
As I mentioned earlier, have you taken a look at your internal network and
your internet uplink? Are your switches full or half duplex? Are they
switches or hubs? What is the network utilization like when these problems
are at their worst? Can you get stats on data rate and collisions from your
network equipment? These are all important things to be able to measure to
try and solve this problem, especially since you have revealed that it
doesn't seem to have anythign to do with the TDM interface (your X101Ps).
Finally, can you post your 'cat /proc/interrupts' output?
-A.
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